Collaborative Stage for TNM 7 - Revised 12/31/2009 [ Schema ]
| Code | Description |
| 000 | No mass/tumor found |
| 001-979 | Exact depth in hundredths of millimeters Examples: 001 0.01 millimeter 002 0.02 millimeter 010 0.1 millimeter 074 0.74 millimeter 100 1 millimeter 105 1.05 millimeters 979 9.79 millimeters |
| 980 | 9.80 millimeters or larger |
| 987 | Not applicable, not squamous cell carcinoma of skin of eyelid |
| 988 | Not applicable: Information not collected for this case (May include cases converted from code 888 used in CSv1 for "Not applicable" or when the item was not collected. If this item is required to derive T, N, M, or any stage, use of code 988 may result in an error.) |
| 990 | Microinvasion; microscopic focus or foci only, no depth given |
| 998 | No histologic examination of primary site |
| 999 | Not documented in patient record Unknown; depth not stated |